Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
Taxonomy is...
|
1. the study of classifying organisms and placing them into hierarchical groups.
|
|
|
Who first presented the traditional system of classifying organisms?
|
1. Carl Linnaeus
2. He classified over 11,000 animals and plants in his lifetime. |
|
|
What are the eight major hierarchical groups?
|
1. Domain
2. Kingdom 3. Phylum 4. Class 5. Order 6. Family 7. Genus 8. species |
|
|
What is known as the "biological species concept?"
|
1. Group of organisms that can interbreed and produce viable and fertile offspring.
|
|
|
What is binomial nomenclature?
|
1. a "two name" system that refers to each organism by just the two smallest taxonomic categories: Genus and species.
|
|
|
What are the four morphological characters?
|
1. Presence/Absence
2. Color/Pattern 3. Meristic (what you can count) 4. Morphometric (length) |
|
|
What is a dichotomous key?
|
1. system that helps scientists identify and categorize organisms.
|
|
|
What are the five domains of bacteria?
|
1. Cyanobacteria
2. Gram Positive 3. Spirochaetes 4. Chlamydias 5. Proteobacteria |
|
|
What is another name for Cyanobacteria?
|
1. Blue-green algae
|
|
|
What four genus fall under Cyanobacteria?
|
AGNO
1. Anabaena 2. Gloeocapsa 3. Nostoc 4. Oscillatoria |
|
|
What genus falls under Gram Positive?
|
1. Streptococcus
|
|
|
What genus falls under Spirochaetes?
|
1. Treponema
|
|
|
What is the basic bacterial structure?
|
1. Unicellular prokaryote
2. Single celled, no nucleus or membrane bound organelles. |
|
|
What are the three bacterial shapes?
|
1. Cocci
2. Bacilli 3. Spirilla |
|
|
What are the characteristics of Cocci?
|
1. Spherical
2. Occur in chains, clusters, pairs, etc. 3. Dark pink color |
|
|
What are the characteristics of Bacillus?
|
1. Rod-shaped, cylindrical cells
2. Pink color |
|
|
What are the characteristics of Spirilus?
|
1. Helical, coiled cells.
2. Usually have flagella 3. Faint, light blue color |
|
|
What are flagella used for?
|
1. Movement of the cell
|
|
|
What are pili used for?
|
1. Adherence
2. Conjugation - genetic transfer |
|
|
What is an endospore?
|
1. They survive in harsh environments.
2. All genetic info goes to head, which allows for it to lie in a dormant state almost indefinitely |
|
|
What is Gram Positive?
|
1. Has a cell wall/peptidoglycan and a plasma membrane.
2. Keeps a purple color when stained. |
|
|
What is Gram Negative?
|
1. Has an outer membrane made of lipopolysaccharides. A peptidoglycan layer and then a plasma membrane.
2. Stays red when stained. |
